Volume 4 of Hanspeter Gmür's 1990s Naxos recordings of J C Bach's sinfonias was made later than the other three JC Bach: Sinfonias, Vol.1 JC Bach: Sinfonias, Vol.2 JC Bach: Sinfonias, Vol.3
in April 1995, and features the Hungarian Failoni Orchestra (made up of players from the Hungarian State Opera Orchestra), rather than Camerata Budapest. The reason for the change of band is most likely to produce more "heft" for the Op.18 Sinfonias. Three of the sinfonias are for double orchestra, one of which was also used as an overture to one of Bach's operas, "Endimione". Op.18/2 was also used as an opera overture ("Lucio Silla" - later given by Mozart), and all of these works are undoubtedly Bach's most advanced orchestral pieces, very much in the stlye of the then current "Mannheim Style".
Although a modern instrument band, the Failoni Orchestra certainly play these works with spirit and were recorded in well-led performances in the good acoustic of Festetich Castle in Budapest. Despite not being, exactly, a household name, the Failoni Orchestra made some good recordings in the 1990s for Naxos, some excellent Schubert among them Schubert: Symphonies Nos. 1 and 2
I think that this is the best volume of Hanspeter Gmür's little cycle of J C Bach sinfonia recordings made for Naxos and makes for a very pleasant way to spend 72:25 of your time!